The Falls Church Spring Community Clean-up needs volunteers, 10 a.m.-noon April 13. Registered volunteers meet at the Falls Church Community Center, 223 Little Falls St., to get the litter kit and instructions. Groups are welcome and can request a particular park or area of town. Registration required. 703-248-5456, alohrenz@fallschurchva.gov. www.fallschurchva.gov/Volunteer.

Bikes for the World collection. The West Springfield Rotary Club and Irving Middle School will host the collection. Donate used or outgrown bikes to provide transportation to school or work for a new owner overseas. Take bikes to Irving Middle School, 8100 Old Keene Mill Rd., Springfield, 10 a.m.-2 p.m. April 13. A $10 donation per bike is requested to cover shipping. 703-200-4426, www.bikesfortheworld.org.

The 4Paws Rescue Team needs adult volunteers to care for cats at the Alexandria Petco. Volunteers scoop litter, provide fresh food and water and play with the cats in a quiet room. A six month commitment is required. Morning and evening shifts are available. 703-715-6369, info@fourpaws.org, www.fourpaws.org.

The Homeless Animals Rescue Team needs volunteers, 18 and older, to hold dogs at adoption events on Saturdays. Foster homes are also needed for dogs and cats. 703-691-4278, www.hart90.org.

The Fairfax County Police Department needs vehicles in working condition to help train and prepare officers for police work, including with precision pursuit driving techniques. Tom Beckman, 703-818-1924.

The Fairfax County Park Authority needs volunteers to assist at the U.S. Amateur Public Links Championship at Laurel Hill Golf Club in Lorton, July 15-30. Volunteers are needed to be walking scorers, forecaddies and standard bearers. 703-493-8849, mary.cline@fairfaxcounty.gov.

The U.S. Coast Guard Auxiliary needs volunteer boat crew members on their patrol boats to assist boaters on the Potomac River. Training and equipment are provided. 703-780-3765, eaglesailor75@cox.net.